Improvement in bakers  ovens



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Patented Marchz, 1875.

3 Sheets-Sheetv3,

1 HALL. Baker-s" Dven.

Patent'ed March 2, 1875.

NOQl60,424.

UNITED STATES PATENT OFFICE JAMES HALL, OF CINCINNATI, OHIO.

IMPROVEMENT IN BAKERS OVENS.

Specication forming part of Letters Patent No. 160,424, dated March 2, 1875; application led October 24, 1874.

To all whom it may concern Be it known that I, JAMES HALL, of Oincinnati, Hamilton county, State of Ohio, have invented certain new and useful Improvements in Revolving-Reel Bake-Ovens, of which the followin g is a specification:

My invention consists of a construction and arrangement of iiues directly above and on each side of the grate-bars forcarrying ott' noxious vapors, which would otherwise pass up and'out of the mouth of the oven into the bake-shop, and of a bake-oven ot' hereinafterdescribed shape for the most economical use or" the heat.

Figure l is a transverse section of my improved bake-oven. Fig. 2 is a section taken on line .fr x. Fig. l. Fig. 3 is a perspective view of the driving-wheel, worm-shaft, pulley, and crank.

A is the body ofthe oven, situated partially above and partially below the floor B. lt is so built that the inner surface conforms to the track et of the revolving reel O, excepting below said reel, where it extends downwardly, and forms a fire-chamber with curved and angling back and front walls a a, respectively, and perpendicular sides a am. The front of the said chamber a slopes directly from the mouth ofthe oven to the gratebars l), while the back a curves the whole depth of the chamber to the same level.

The curvature of the-back a so contines the configuration of the oven from the back of the grate-bars to the top of the reel that no portion of the chamber is permitted to receive the heated gases that cannot be utilized in heating the pans, and in this respect the oven is a marked improvement in the economical use ot fuel over ovens built with corners at the back of the grate.

Formed in the wall a, directly in front of the grate-bars, and below the tloor B, is a fuel-door, E, while on the same side of the oven, and above oor B, is a door, F, for feeding the baking-pans Gr, fastened upon reel O. Said reel is secured upon shaft H, and is revolved by worm I acting upon wheel J, secured to the shaft H.

The worm is set in motion by means of handpower through crank L.

As shown in Fig. 3, the worm is placed below .the wheel J, so that a person standing upon oor B can conveniently operate the crank L.

Situated near the bottom of the wall a is a flue, M, leading to the main flue, and furnished with a damper, m. Situated at the top of the oven is a curved flue, N, leadin g to the main tine, and furnished with a damper, n. Abovementioned tlues furnish means of escape for the difterent vapors, while along the sides of the grate-bars D are perforations d for the escape of noxious or unhealthy vapors to the fines o o, said ilues connecting with flue P, and thence to main nues. Were this provision not made for the escape of said gases they would pass through door F, when open, into the bake-shop.

The pans Gr are secured to the reel O by means of stud-bolts g, secured or cast in the arms of the reel, and fitted with a nut., g', so as to allow the pans to turn loosely upon the bolts.

By this method of securing the pans they can be conveniently removed at any time, and attached in a simpler and cheaper way than when long connecting cross rods are used, as heretofore.

I claiml. In combination with the grate-bars D of the furnace, which open directly into the body of the oven, the perforations d and lines o o, arranged on either side of the grate, and y set my hand.

JAMES HALL. Witnesses:

R. M. HUNTER, GEO. H. THAYER. 

